发动机在压缩和作功行程中,部分可燃混合气和废气会窜入曲轴箱中,这些气体必须被排出曲轴箱或吸入气缸中燃烧,否则会导致机油变质,发动机各接合面漏油,还会影响发动机的正常工作。故现代 Engine during compression and work trip, some combustible mixture and exhaust will flee into the crankcase, these gases must be discharged from the crankcase or inhaled cylinder combustion, otherwise it will lead to deterioration of oil, the engine oil leakage at the joints, but also Affect the normal work of the engine. It is modern